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(No Model.)

H. 0. SERGBANT.

l QUARRY FRAME FOR ROCK DRILLS. l No. 355,347.

Patented Jan. 4,1887.v

)Wiz/Masas www All'nrrnn STATESV HENRY C. SERGEANT,

PATENT @rtree OF NElVnYORK, N. Y.

QUARRY-FRAME FOR ROCK-DRILLS.

SPECIFICATION forming part of Letters Patent No. 355,347, dated January 4, 1.887.

Application filed Julie 4, 1886.

tion to drill a line or row of holes at any de- Y sired angle.

rIhe invention relates tov a quarry-frame which consists of a bar supported at opposite ends, and supports for the drill which provide forits movement both lengthwise ofand around the bar.

In quarry-frames of this kindA as heretofore constructed the same securing devices or bolts have been employed to hold the supports for the drillcylinderin the desired position on the bar, both as regards lengthwise movement upon the bar and rotary movement around the bar, and the object of my invention is to so construct and combine such supportsfor the drill that freedom is afforded for moving the drill lengthwise of or swinging it around the bar without necessarily freeing it entirely, so that its position in respect to both said movements is disturbed. f

In what I now consider its most approved form the apparatus comprises, in addition to a horizontal bar, a carriage which may be moved lengthwise of the bar by a rack and pinion and secured in position by a set-screw or otherwise, and which has a circular journal portion projecting from it, andupon this circular journal portion is fitted asecond carriage, which may consist of a split collar or clamp, and which is provided lwith means for the attachment of a rock-drill and for clamping it upon the circular journal portion to prevent its turning thereon.

The invention consists in novel combinations of parts, which are hereinafter described, and pointedout in the claims.

In the accompanying drawings, Figure l is a plan of aquarry-fraine embodying myinvention. Fig. 2 is atransverse section thereof upon the plane of the dotted line a: x, Fig. 1, and including an elevation of a rock-drill se- Serial No. $104,154. (No model.)

cured in position upon the rotary carriage or clamp, and Fig. 8 is a longitudinal section through the two carriages, also showing a side view of a portion of the bar on which they are supported.

Similar letters of reference designate correspending parts in the several figures.

A designatesthe horizontal bar, which may be made of a piece of heavy pipe or tubing, and upon which is secured a toothed rack, b, extending lengthwise ofthe bar. At opposite ends the bar A is supported by benches 'l bolts b3, which are inserted through the benches B, and provided with nuts bt, and saidibenches have at the side hubs or bosses b5, upon which rest collars b. Each collar I)6 has in its face semicircular recesses bi, receiving a leg, B', and as here represented the bosses or projections b5 have their faces oblique or inclined to the perpendicular, so that the legs B/ of the benches at opposite ends of the bar A will stand outward or inclined away from 'each other in a direction lengthwise of the bar A, as shown in Fig. l. By loosening the nuts b* the legs of each pair may be swung inward or out ward toward or from each other, and they may also be slid more or less through the holes b2 provided for them in the bolts b3. By tightening the nuts bL the legs B are lsecured both against swinging and against any lengthwise movement.

C designates a carriage fitted to the bar, and which may be traversed along the bar in a direction lengthwise thereof by means of a pinion, c, which engages the rack b. This pinion c is upon a shaft, c', having applied to it ahan-y dle or hand crank, c2, whereby it may be turned, and after the carriage C is brought to the proper position on the bar A it may be there secured by a set-screw, c3. The carriage C has a circular journal portion, G, which is clearly shown in Fig. 3, and to this journal portion is iitted a rotary carriage, D, which may be turned upon the circular journal-portion C in a plane transverse to the length of the bar A. This carriage D may advanta- IOO geously consist of a clamp or collar divided at d, as shown in Fig. 2, and provided with a bolt, d', whereby it may be clamped tightly upon the journal portion, so as to prevent its turning. This carriage D moves with the carriage C in a direction lengthwise of the bar, and after the carriage C is secured in fixed position the carriage D may be rotated or turned any desired portion of a revolution around the bar A and upon the journal portion C. This clamp or carriage D is provided with means for the attachment of a rock-drill. In

vthis example of the invention these means consist of a iixed jaw, e, and a movable jaw, e', made in the form of a lever fulerumed at e2. These jaws are dovetailed on their inner faces and are adapted to grasp and strongly hold a correspondingly dovetailed circular projection,f, on the back of the drill F. The movablejaw e may be drawn inward, in order to clamp the projection f, Vby means ofa bolt, e3. I make no claim tothe specific construction of this clamp, as it is shown and described in my Letters Patent No 337,526.

From the above description it will be understood that in order to drill a line or row Yof holes at any angle it isonly necessary to Yjournal portion C', so as to present the drill at the proper angle, or, if it be desired, either horizontally or vertically. The bolt d is then tightened, to hold the rotary carriage D in place, and holes are then drilled by the machine, the sliding carriage C being moved a proper distance between the drilling of the several holes.

Although I have described the bar A as horizontal, it may, owing to the nature of the surface on which the machine is used, be set at any incline desired. It' used `upon an approximately-horizontal surface the bar will be horizontal.

It will be observed that the carriage D is held against rotation about the bar A by the bolt d', and that it is held against movement lengthwise of t-he bar by the set-screw c3, which directly holds'the carriage C. These securing devices are entirely independent of each other, and it willrbe obvious that the bolt d may be loosened to provide for turning the carriage D with the drill upon it, while it is positively held against movement lengthwise of the bar, and that by loosening the setscrew c3 provision is afforded for moving the carriages C D lengthwise of the bar, while the carriage D is positively clamped upon the carriageO, so as to maintain the drill at the desired angle.

That I claim as my invention', and desire to secure by Letters Patent, is

l. The combination, with a horizontal bar and benches and legs at opposite ends thereof for supporting the bar and preventing its turning, of a rotary carriage turnable around the bar, and provided with means for the attach` ment of a rook-drill, and securing devices independent of each other for holding the earriage against longitudinal and rotary movement on the bar, whereby provision is aiorded lfor releasing the carriage for either movement without freeing it for the other movement, substantially as herein described.

2. The combination, with a horizontal bar and benches and legs for supporting the bar and preventing its turning, of a split collar, D, turnable around on an adjustable saddle upon the bar, and provided with a iiXed jaw, e, a movablejaw, e', and a bolt for adjusting the movable jaw relatively to the fixed jaw,where by provision 4is aiorded for the attachment of the rock-drill, and a bolt, independent of the bolt which operates the movablejaw, for securing the split collar against turning around the bar, substantially as herein described.

3. The combination, with a horizontalfbar and benches and legs at opposite ends thereof for supporting the bar and preventing its turning, of a carriage, C, movable lengthwise of the bar and co mprising a circular journal portion, C', and a rotary carriage, D, fitted to turn on said journal portion,and provided with means for the attachment of the rock-drill, substantially as herein described.

4. The combination, with a horizontal bar and benches and legs at opposite ends thereof for supporting the bar and preventingits turning, of the carriage C, movable lengthwise of the bar and comprising ajournal portion, C', gearing for moving said carriage lengthwise of the bar, and a rotary carriage, L), fitted to turn on the journal portion C', and provided with means for the attachment of a rock-drill, substantially as herein described. A

5. rI he combination, with the horizontal bar provided with a longitudinal rack, b, of the sliding carriage C, provided with a pinion, c, and having the cireularjournal portion C, and the split collar D, turnableton the journal portion, and provided with a clamp for the attachment of a rockdrill, substantially as herein described.

HENRY C. SERGEANT.

Witnesses C. HALL, FREDK. HAYNEs.

IOO

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